There are a lot of metals in your diet. Iron and sodium are most famous, but others are present too. You need a little of most of them, but too much can be to

There are a lot of metals in your diet. Iron and sodium are most famous, but others are present too. You need a little of most of them, but too much can be toxic. Probably there's a lot in this thing; it's not clear from the article if it's enough to cause a problem.